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Apr 24 VH

 
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Clement



Joined: 24 Apr 2006
Posts: 1111
Location: Dar es Salaam Tanzania
PostPosted: Tue Apr 24, 2012 12:35 am    Post subject: Apr 24 VH Reply with quote
After the Basics
Code:

+----------+--------------+---------+
| 8  12  5 | 7  12   6    | 4 9  3  |
| 13 6   9 | 13 8    4    | 5 2  7  |
| 4  23  7 | 9  23   5    | 1 6  8  |
+----------+--------------+---------+
| 17 9   3 | 58 1567 18   | 2 4  16 |
| 5  17  6 | 4  17   2    | 3 8  9  |
| 2  4   8 | 13 1369 1-39  | 7 5  16 |
+----------+--------------+---------+
| 9  35  2 | 6  135  7    | 8 13 4  |
| 6  358 1 | 58 4    38   | 9 7  2  |
| 37 378 4 | 2  139  1389 | 6 13 5  |
+----------+--------------+---------+
Xy-Wing 13 18 38 pivoted in r4c6; r6c6<>6 reduces to the following Grid
Code:

+----------+--------------+---------+
| 8  E12  5 | 7  F12   6    | 4 9  3  |
| D13 6   9 | 13 8    4    | 5 2  7  |
| 4  23  7 | 9  23   5    | 1 6  8  |
+----------+--------------+---------+
| C17 9   3 | 58 -1567 18   | 2 4  16 |
| 5  B17  6 | 4  A17   2    | 3 8  9  |
| 2  4   8 | 13 1369 139  | 7 5  16 |
+----------+--------------+---------+
| 9  35  2 | 6  -15  7    | 8 13 4  |
| 6  358 1 | 58 4    38   | 9 7  2  |
| 37 378 4 | 2  -19  1389 | 6 13 5  |
+----------+--------------+---------+
Single's chains on 1 from A-->F set r4679c5<>1 which solves it.
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Marty R.



Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
PostPosted: Tue Apr 24, 2012 1:41 am    Post subject: Reply with quote
The X-Wing on 1 in r15 was enough for me.
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Clement



Joined: 24 Apr 2006
Posts: 1111
Location: Dar es Salaam Tanzania
PostPosted: Tue Apr 24, 2012 7:30 am    Post subject: April 24 VH Reply with quote
Marty R. wrote:
The X-Wing on 1 in r15 was enough for me.
The fun of Sudoku, the x-wing escaped my attention.
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